Uruguayan-born forward Sebastian Soria scored the only goal as Qatar claimed an important 1-0 away win over surprise package Lebanon in their World Cup qualifier in Beirut on Sunday.
Soria intercepted a stray pass from Ramez Dayoub, rounded the goalkeeper and slotted into an empty net in the 64th minute to seal a precious three points in their opening fourth round, Group A clash.
Lebanon, who beat Asian heavyweights South Korea in the third round to advance to this stage for the first time as runners-up behind their beaten opponents, missed a great chance to snatch a point late on when Youssef Mohamad volleyed wide from four-meters out.
Qatar are level on points with Iran, who beat Uzbekistan 1-0 in Tashkent earlier on Sunday, at the top of the five-team pool which also features South Korea.
The top two teams from the group will qualify for the finals in Brazil.